/* Copyright (c) 2020 XEPIC Corporation Limited */
/*
 * Copyright (c) 2012-2015 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
 *    General Public License as published by the Free Software
 *    Foundation; either version 2 of the License, or (at your option)
 *    any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 * USA.
 */

#include <assert.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>

#include "sys_priv.h"
static PLI_INT32 dobject_size_compiletf(ICARUS_VPI_CONST PLI_BYTE8* name) {
  vpiHandle callh = vpi_handle(vpiSysTfCall, 0);
  vpiHandle argv, arg;

  argv = vpi_iterate(vpiArgument, callh);
  if (argv == 0) {
    vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
               (int)vpi_get(vpiLineNo, callh));
    vpi_printf(
        "%s requires a dynamic array, queue or string "
        "argument.\n",
        name);
    vpi_control(vpiFinish, 1);
    return 0;
  }

  arg = vpi_scan(argv); /* This should never be zero. */
  assert(arg);

  /* The argument must be a dynamic array, queue or string. */
  switch (vpi_get(vpiType, arg)) {
    case vpiStringVar:
      break;
    case vpiArrayVar:
      switch (vpi_get(vpiArrayType, arg)) {
        case vpiDynamicArray:
        case vpiQueueArray:
          break;
        default:
          vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
                     (int)vpi_get(vpiLineNo, callh));
          vpi_printf(
              "%s argument must be a dynamic array, queue or "
              "string.\n",
              name);
          vpi_control(vpiFinish, 1);
      }
      break;
    default:
      vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
                 (int)vpi_get(vpiLineNo, callh));
      vpi_printf(
          "%s argument must be a dynamic array, queue or string, "
          "given a %s.\n",
          name, vpi_get_str(vpiType, arg));
      vpi_control(vpiFinish, 1);
  }

  arg = vpi_scan(argv);
  if (arg != 0) {
    vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
               (int)vpi_get(vpiLineNo, callh));
    vpi_printf("%s has too many arguments.\n", name);
    vpi_control(vpiFinish, 1);
    vpi_free_object(argv);
  }

  return 0;
}

static PLI_INT32 dobject_size_calltf(ICARUS_VPI_CONST PLI_BYTE8* name) {
  vpiHandle callh = vpi_handle(vpiSysTfCall, 0);
  vpiHandle argv = vpi_iterate(vpiArgument, callh);
  vpiHandle arg = vpi_scan(argv);

  (void)name; /* Parameter is not used. */

  vpi_free_object(argv);

  s_vpi_value value;
  value.format = vpiIntVal;
  value.value.integer = vpi_get(vpiSize, arg);

  vpi_put_value(callh, &value, 0, vpiNoDelay);

  return 0;
}

void sys_darray_register(void) {
  s_vpi_systf_data tf_data;
  vpiHandle res;

  tf_data.type = vpiSysFunc;
  tf_data.sysfunctype = vpiIntFunc;
  tf_data.tfname = "$size";
  tf_data.calltf = dobject_size_calltf;
  tf_data.compiletf = dobject_size_compiletf;
  tf_data.sizetf = 0;
  tf_data.user_data = "$size";
  res = vpi_register_systf(&tf_data);
  vpip_make_systf_system_defined(res);
}
